Oguntade, O.A., Sosanya, O.S., Olagunju, S.O., Adewusi, K.M., Odusanya, O.A., Nassir, A.L., Joda, A.O., Adegoke, A.T. and Salami, W.A.: Characterization of soils based on extractable nutrient for tomato cultivation in derived savannah region of Ogun state, Southwest Nigeria